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How to Save Energy with Solar Panels in Homes

Seeking alternative energy sources for him savings in household consumption It is something that many families are considering today.

How to Save Energy with Solar Panels in Homes

Spain pays a very high amount for electricity but now, thanks to the sun tax repealit is much easier to use the energy generated by installations of self-consumption.

In this article we will tell you how can you save energy with the use of photovoltaic solar panels In your home.

Why Choose Photovoltaic Solar Panels for your Home

The photovoltaic solar panels take advantage of the solar radiation for the electricity generation.

Therefore, installing this type of plates in our country is a success if what we want is to considerably reduce our dependence on the electricity grid or save on the electricity bill.

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Thanks to the innumerable hours of sun that we have in Spain, we will achieve amortize the high initial cost of our installation of photovoltaic self-consumptionbecoming one of the compelling reasons to take the step and start enjoy the clean energy that the sun gives us.

Depending on the hours in which the sun hits the solar panels in the area where we live, you can generate a savings of up to more than 700 euros per year in the total cost of electricity, according to a study by Selectra.

How to Save Energy with Photovoltaic Solar Panels

at the time of choose a self-consumption systemmust determine what energy needs there are and if they can be covered only with the installation of solar panels. In this sense, we find:

  • Isolated self-consumption facilities. This type of self-consumption installation depend entirely on the energy produced by solar panels. Therefore, they do not imply any cost when generating energy, nor do you have to pay electricity bills as they are not connected to the network.

The only thing to keep in mind for this system is have batteries that store excess energywhich can be used at any time.

  • Self-consumption facilities connected to the network. In this case, the photovoltaic installation acts as a supplement to the service contracted from the electricity company. In many cases, generating your own electricity at home can save up to 75% of energy and your monthly cost if you opt for solar panels with energy storage.

How many solar panels are needed to power a house?

The first thing before venturing to install solar panels at home is make a study of our locationso that we know how much solar radiation arrives and the hours of sunshine that are enjoyed on average per year.

In this way, Not only is the number of plates to be installed important, but also their orientation and inclination.since if they are inadequate they will not be as efficient as they could be.

Therefore, the solar panels should be orient south to capture the maximum energy and, in addition, have a approximate inclination of 18º on geographic latitude.

Regarding the number of panels that we must installEast will depend on several factorslike the energy needs of each homewhether it is going to be an isolated self-consumption or connected to the network, whether batteries or of the hours of sun who enjoys the place where the installation will be carried out.

Next, we give you some data on the panels that would have to be installed in certain cities, as well as their profitability.

Profitability of Photovoltaic Solar Panels

Taking more or less advantage of self-consumption installations depends to a great extent on the place where it is carried out.since the hours of solar irradiation vary throughout the national territory.

Therefore, it is essential to know the hours of sunshine in the area where you want to install the solar panelssince the same number of panels will not be as productive in Murcia as in the Basque Country.

As an example, Madrid has about 2,600 hours of sunshine a yearbeing the European capital that most enjoys the sun.

With a installation of about 14 solar panels On average, a Madrid family with an annual consumption of 5,000 KWh would get a savings of up to 64% on the electric bill.

However, Madrid is not the city with the sunniest in the country, and it is that in places like Badajoz, Seville, Almería or Alicanteis where they are produced highest values ​​of solar radiation.


In Sevillefor example, only about 13 panels would be enough to generate an annual saving of 720 euros per yearthanks to the use of more than 2,800 hours of sunshine per year.

About areas with less incidence of solar radiationlike Vizcaya, these would need a more solar panels. Specifically, for a savings of up to 61% on electricity billsit would be necessary to install 17 photovoltaic panels.

With this data, thinking about installing solar panels in our home becomes much more appealing and even more so if we take into account that with the saving that the installation supposes in the bill, which will have one useful life of up to 35 years on average, it will be amortized between 8 and 10 years.

Profitability of Self-consumption Systems according to the Type of Plates

On the other hand, the profitability of a solar panel will also be marked by the typeand it is that in the market there are available various kinds of photovoltaic panels. Specifically and, depending on the type of cell they are made ofwe find the following:

  • crystal clearwhich can be in turn monocrystalline or polycrystalline. In the case of the former, they are made up of circular or octagonal sections of silicon. The latter are made up of small crystallized particles.
  • amorphousin which the silicon has not crystallized.

In this regard, the plates will be more effective and therefore profitable, the larger their crystals, weight and thickness. In the case of crystalline plateshis yield can be up to 22%while the amorphous do not exceed 10%.

Therefore, In addition to where you live and the number of solar panels you need, it is important that you purchase quality panels that efficiently produce the energy you need for your home.

If in addition to savings that already involves installing photovoltaic solar panels in your home you want to save even more, we recommend you consult our articles on Aid and subsidies for the installation of self-consumption systemsin addition to our business guidewhere you can find the best professionals in the sector.

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